Charles hilbeet



G. HILBERT.

(No Model.)

INHALER.

Patented May 1,1883.

UNITED STATES PATENT FFICE CHARLES HILBERT, OE SING SING, NEW YORK, ASSIGNOR TO HIMSELF, JOHN J. MAHANEY, AND JOSEPH STERN, ALL OF SAME PLACE.

INHALER.

SPECIFICATION forming part of Letters Patent No. 276,968, dated May 1, 1883.

Application filed December 1, 1882. (N model.)

To all whom it may concern:

Be it known that I, CHARLES HILBERT, a citizen of the United States, residing at Sing Sing, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Inhalers, of which the following is a full, clear, and exactdescription.

This invention relates to the vaporization of ether for the purpose of administering the same as an anaesthetic; and my invention consists, essentially, in surrounding the body of a vessel for containing the anaesthetic with a jacket adapted to receive and hold a quantity of heated water, whereby the said vessel is warmed to a degree sufficient to raise its contents to about the temperature of the human body, thereby effecting the vaporization of the anaesthetic very readily and obtaining a free flowof such vapor, while at the same time the danger attending its administration in a cold state is avoided.

Thedrawing represents in side elevation, the jacket being in section, an apparatus embodying my invention.

The letter A designates a cylindrical shell, provided with end caps, B B, at its upper and lower ends, respectively. The cap B is interiorly screw-threaded to engage a screwthread on the exterior of the upper end of the shell A, and the cap B overlaps the lower end of the shell A, and is soldered or sweated thereto. The interior of the shell A is adapted to contain a cake of magnesia or other pulverulent material, or such material in a powdered state as may be desired, for the purpose of absorbing the anaesthetic. The cap B is provided with an opening, into which a neck, I), is screwed. This neck b has a channel-way leading into the opening in the cap B, and is connected to an inhaler or facemask, M, by means of a tube, t. The cap B is also provided with an opening, into which a neck, I), is screwed. The neck I) has a channel-way leading into the opening in the cap B, and adapted to be opened or closed by means of a plug, P. A bulb or other airforcing device, a, is connected to the neck I) by means of a tube,

It is intended when the apparatus is not in use to remove the neck 0 and substitute therefor a stopper or a neck provided with a plug,

so as to close the vessel-at both ends and prevent evaporation.

J designates my improved hot-water jacket, consisting of a cylindrical shell closed at both ends,surrounding and soldered or sweated to the shell A, the exterior of the shell A forming part of thejacket J. An opening, I, is formed in the jacket J, provided with a cupshaped neck, 0, through which hot water may be introduced into thejacket, and adapted to be tightly closed by means of a stopper, 8. It will be seen that the water in the jacket J comes in direct contact with the exterior of the shell A, and the shell A is thereby heated, so as to raise the temperature of the absorbed antestheticto the desired extent.

Two handles, it h, are shown attached to the jacket J, which may be employed to suspend the apparatus, by means of a strap or cord, from the shoulder of the operator, thus leavin g both hands free.

The operation is as follows: Referring particularly to the apparatus shown in the drawing, the absorbent material contained in the receiver thereof is first saturated with the desired anaesthetic, and the plug P is turned to open the channelway in the neck b. After the anaesthetic has been absorbed by the packing the water-j acketJ is filled with hot water, there by heating the receiver containing the anaesthetic and vaporizing the an aesthetic, which vapor escapes through the tube it into the facemask M. To increase the flow, air is forced into the apparatus, as by bulb to. A gradual pressure on the air-forcing apparatus will insure a steady flow of the vaporized anmsthetic of sufficient strength to produce anaesthesia very quickly, and the flow may be regulated by increasing or diminishing the pressure on the air-pump.

When applied to inhalers wherein the anaesthetic is drawn from the receiver by inhalation, my water-jacket will be found of large practical value, as byit the antestheticin the receiver can be vaporized, and will flow steadily, in the form of a dry gas, to the point of application.

' The vaporization of ether, for instance, is increased to such extent by heat that in the apparatus shownin thedrawing and hereinbefore IOU described the flow of vaporized ether, after the hot water is introduced into thewater-jacket, is so great that anaesthesia can be produced without forcing airinto the receiver; butwhen air-pressure is not employed it is advisable to hold the apparatus above the patient.

WhatI claim as my invention, and desire to secure by Letters Patent, is

An apparatus for administering an aesthetics,

l a substantially such as described, having a receiver for the anzesthetizing material provided with ajaeket surrounding the said receiver, and adapted to contain heated water to vaporize the anaesthetic in the receiver, as set forth.

In testimony whereof Iliave hereunto set my 1' hand this 6th day of October, A. D. 1882.

CHARLES HILBERT.

Vitnesses ERNEST G. WEBB, ARTHUR O. WEBB. 

